210203223212321 has 2 divisors, whose sum is σ = 210203223212322. Its totient is φ = 210203223212320.

The previous prime is 210203223212317. The next prime is 210203223212341. The reversal of 210203223212321 is 123212322302012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206207761924096 + 3995461288225 = 14359936^2 + 1998865^2 .

It is a cyclic number.

It is not a de Polignac number, because 210203223212321 - 2² = 210203223212317 is a prime.

It is not a weakly prime, because it can be changed into another prime (210203223212341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105101611606160 + 105101611606161.

It is an arithmetic number, because the mean of its divisors is an integer number (105101611606161).

Almost surely, 2^{210203223212321} is an apocalyptic number.

It is an amenable number.

210203223212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

210203223212321 is an equidigital number, since it uses as much as digits as its factorization.

210203223212321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 210203223212321 its reverse (123212322302012), we get a palindrome (333415545514333).

The spelling of 210203223212321 in words is "two hundred ten trillion, two hundred three billion, two hundred twenty-three million, two hundred twelve thousand, three hundred twenty-one".